package com.ly.framework.security.filter;

import java.io.IOException;
import javax.annotation.Resource;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ly.common.core.domain.model.LoginUser;
import com.ly.common.utils.SecurityUtils;
import com.ly.common.utils.StringUtils;
import com.ly.framework.web.service.TokenService;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;

/**
 * token过滤器 验证token有效性
 * @author ly
 */
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {

    @Resource
    private TokenService tokenService;

    @Override
    protected void doFilterInternal (HttpServletRequest request, HttpServletResponse response, FilterChain chain)
            throws ServletException, IOException {
        LoginUser loginUser = tokenService.getLoginUser ( request );
        if ( StringUtils.isNotNull ( loginUser ) && StringUtils.isNull ( SecurityUtils.getAuthentication () ) ) {
            tokenService.verifyToken ( loginUser );
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken ( loginUser, null, loginUser.getAuthorities () );
            authenticationToken.setDetails ( new WebAuthenticationDetailsSource ().buildDetails ( request ) );
            SecurityContextHolder.getContext ().setAuthentication ( authenticationToken );
        }
        chain.doFilter ( request, response );
    }
}
